The best hone grit for premium steel car piston rings is around 20 Ra. You should use #320 or 400 grit silicon carbide stones for higher-grade rings. Those with nitrided rings should be honed with finer diamond grit.
Full Answer
What grit should I use for my barrel hone?
Using to fine of a grit will not allow you to properly lap the rings in and using to coarse of a grit will wear your rings quickly. Many racers today use a course grit to hone there barrels. Using a courser grit will allow the rings to "lap in" quicker but will also allow the rings to wear out quicker.
How much grit should I hone my cylinders?
According to a Triumph service bulletin dated September 20, 1971 - Triumph recommends that you use a 150 grit hone to hone your cylinders upon installation of new piston rings. So why 150 grit? Isn't that too course?
What is the grit rating of a flex-hone?
Flex-Hone happens to manufacture hones with a grit rating from 20 all the way to 800. Of course the higher number the finer the stone and finish. Click here for more information on Flex-Hone products.
What grit is best for cylinder hone?
In the case of most automotive combustion cylinders, 120 grit works for older cast ring sets or where the cylinder has been re-bored and is a little rough. Hones with 180 to 240 grits are good choices for general deglazing where the cylinder is not going to be bored or honed.
What grit hone for seals rings?
Recommended hone grit specification: moly-face or cast iron top ring 280-320 grit. Chrome face top ring: 220-280 grit. Finished hone with a 22 to 24 degree cross-hatch pattern off horizontal axis.
How do I choose a cylinder hone?
Flex-Hones are made oversize so you need to choose the size based on the size of your cylinder. If your cylinder is a non-standard size select the next largest size. For example, for a cylinder that has been machined to 3-3/8”, choose a 3-1/2” hone.
Should you hone for new piston rings?
More often than not, you will need to hone your cylinder when replacing the piston rings. That is because honing creates small crosshatches in the surface of the cylinder, to allow the wall of the component to retain oil and provide lubrication for the piston ring.
What size Flex-Hone do I need?
For example, a 1" Flex-Hone size is ordered if a 1" bore is to be finished and the tool is provided oversized. If the bore size is between standard Flex-Hone sizes, the next larger standard Flex-Hone should be selected. For instance, if the nominal bore is 1.093", then the 1-1/8" Flex-Hone is ordered.
What Stone grit should be used when honing cylinders for moly and chrome piston rings?
Moly likes 320-400 grit. Chrome are similar to moly in finish requirement, IIRC.
How long should you hone a cylinder?
You should only have to hone for about 10 to 15 seconds at a time until you can see consistent crosshatch marks. The ball hone will be a little bit more abrasive, which is why we don't recommend using a ball hone on plated cylinders unless they are specified to be safe.
How much material can a hone remove?
The amount of Material Removal when Honing(abrasive flow machining) can be controlled to remove as little as . 001” and will depend on target set by customer. The rougher the starting surface finish is, the more material removal will be needed to achieve the best finish possible."
How do you clean a cylinder after honing?
1:302:29How to Hone Engine Cylinders The Right Way - YouTubeYouTubeStart of suggested clipEnd of suggested clipOnce all of your cylinders are evenly honed it's important to thoroughly clean the block with warmMoreOnce all of your cylinders are evenly honed it's important to thoroughly clean the block with warm soapy water or a degreaser.
Can you hone a chrome cylinder?
You should not hone a chrome plated cylinder. The chrome is harder than your hone. Also, you risk the hone catching the chrome next to one of the ports and flaking of a big chunk. And definitely do not use a ball hone on a two smoke, the ball ends will go up in the ports, might ruin only the hone if you're lucky.
Should you hone nikasil cylinder?
Nikasil cylinders are not generally honed, actually your not suppose to. The nikasil is harder then the rings used for nikasil lined cylinders and this allows the rings to seat in properly. Honing out the nikasil cylinders will prematurely wear out your rings.
Can you bore a cylinder with a hone?
0:2411:41The Difference Between Boring & Honing #m54rebuild 17 - YouTubeYouTubeStart of suggested clipEnd of suggested clipAll you're really doing is you're giving the the cylinder bore a new surface you're sort of on theMoreAll you're really doing is you're giving the the cylinder bore a new surface you're sort of on the old surface. There's going to be sort of they're going to be scratches.
What grit hone do I need for a Triumph cylinder?
According to a Triumph service bulletin dated September 20, 1971 - Triumph recommends that you use a 150 grit hone to hone your cylinders upon installation of new piston rings.
Why use courser grit?
Many racers today use a course grit to hone there barrels. Using a courser grit will allow the rings to "lap in" quicker but will also allow the rings to wear out quicker. Below we will cover some quick points that are typical of poor ring seating and hone selection. Too course.
What is flex hone?
Flex-Hone makes an abrasive composed of Silicone-Carbide which is great for cast iron liners. Flex-Hone happens to manufacture hones with a grit rating from 20 all the way to 800. Of course the higher number the finer the stone and finish. Click here for more information on Flex-Hone products.
What is grey cast iron?
Grey cast iron rings are typically the most popular replacement rings in our industry as grey cast iron is more "forgiving" and affordable. Great for bores that are not perfectly round or true compared to today's standards where everything is far more precise and the tolerances are tighter.
Can a nikasil cylinder be interchanged?
Just these two different materials required different steps and standards to get them set up properly and should not be interchanged.
Can you use coarse grit on a racer?
Choosing the incorrect hone grit whether to course or too fine can cause multiple problems that lead to poor engine performance or failure. Using to fine of a grit will not allow you to properly lap the rings in and using to coarse of a grit will wear your rings quickly. Many racers today use a course grit to hone there barrels.
